dnl Functions for Python bindings dnl dnl Version: 20240418 dnl Function to check if the python binary is available dnl "python${PYTHON_VERSION} python python# python#.#" AC_DEFUN([AX_PROG_PYTHON], [AS_IF( [test "x${PYTHON_VERSION}" != x], [ax_python_progs="python${PYTHON_VERSION}"], [ax_python_progs="python python3 python3.12 python3.11 python3.10 python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3.1 python3.0 python2 python2.7 python2.6 python2.5"]) AC_CHECK_PROGS( [PYTHON], [$ax_python_progs]) AS_IF( [test "x${PYTHON}" != x], [ax_prog_python_version=`${PYTHON} -c "import sys; sys.stdout.write('%d.%d' % (sys.version_info[[0]], sys.version_info[[1]]))" 2>/dev/null`; ax_prog_python_platform=`${PYTHON} -c "import sys; sys.stdout.write(sys.platform)" 2>/dev/null`; AC_SUBST( [PYTHON_PLATFORM], [$ax_prog_python_platform]) ], [AC_MSG_ERROR( [Unable to find python]) ]) AC_SUBST( [PYTHON], [$PYTHON]) ]) dnl Function to check if the python-config binary is available dnl "python${PYTHON_VERSION}-config python-config" AC_DEFUN([AX_PROG_PYTHON_CONFIG], [AS_IF( [test "x${PYTHON_CONFIG}" = x && test "x${PYTHON_VERSION}" != x], [AC_CHECK_PROGS( [PYTHON_CONFIG], [python${PYTHON_VERSION}-config]) ]) AS_IF( [test "x${PYTHON_CONFIG}" = x], [AC_CHECK_PROGS( [PYTHON_CONFIG], [python-config python3-config python3.12-config python3.11-config python3.10-config python3.9-config python3.8-config python3.7-config python3.6-config python3.5-config python3.4-config python3.3-config python3.2-config python3.1-config python3.0-config python2-config python2.7-config python2.6-config python2.5-config]) ]) AS_IF( [test "x${PYTHON_CONFIG}" = x], [AC_MSG_ERROR( [Unable to find python-config]) ]) AC_SUBST( [PYTHON_CONFIG], [$PYTHON_CONFIG]) ]) dnl Function to detect if a Python build environment is available AC_DEFUN([AX_PYTHON_CHECK], [AX_PROG_PYTHON AX_PROG_PYTHON_CONFIG AS_IF( [test "x${PYTHON_CONFIG}" != x], [dnl Check for Python includes PYTHON_INCLUDES=`${PYTHON_CONFIG} --includes 2>/dev/null`; AC_MSG_CHECKING( [for Python includes]) AC_MSG_RESULT( [$PYTHON_INCLUDES]) dnl Check for Python libraries PYTHON_LDFLAGS=`${PYTHON_CONFIG} --ldflags 2>/dev/null`; AC_MSG_CHECKING( [for Python libraries]) AC_MSG_RESULT( [$PYTHON_LDFLAGS]) dnl For CygWin and MinGW add the -no-undefined linker flag AS_CASE( [$build], [*-*-cygwin*],[PYTHON_LDFLAGS="${PYTHON_LDFLAGS} -no-undefined"], [*-*-mingw*],[PYTHON_LDFLAGS="${PYTHON_LDFLAGS} -no-undefined"], [*-*-msys*],[PYTHON_LDFLAGS="${PYTHON_LDFLAGS} -no-undefined"], [*],[]) dnl Check for the existence of Python.h BACKUP_CPPFLAGS="${CPPFLAGS}" CPPFLAGS="${CPPFLAGS} ${PYTHON_INCLUDES}" AC_CHECK_HEADERS( [Python.h], [ac_cv_header_python_h=yes], [ac_cv_header_python_h=no]) CPPFLAGS="${BACKUP_CPPFLAGS}" ]) AS_IF( [test "x${ac_cv_header_python_h}" != xyes], [ac_cv_enable_python=no], [ac_cv_enable_python=${ax_prog_python_version} AC_SUBST( [PYTHON_CPPFLAGS], [$PYTHON_INCLUDES]) AC_SUBST( [PYTHON_LDFLAGS], [$PYTHON_LDFLAGS]) dnl Check for Python prefix AS_IF( [test "x${ac_cv_with_pyprefix}" = x || test "x${ac_cv_with_pyprefix}" = xno], [ax_python_prefix="\${prefix}"], [ax_python_prefix=`${PYTHON_CONFIG} --prefix 2>/dev/null`]) AC_SUBST( [PYTHON_PREFIX], [$ax_python_prefix]) dnl Check for Python exec-prefix AS_IF( [test "x${ac_cv_with_pyprefix}" = x || test "x${ac_cv_with_pyprefix}" = xno], [ax_python_exec_prefix="\${exec_prefix}"], [ax_python_exec_prefix=`${PYTHON_CONFIG} --exec-prefix 2>/dev/null`]) AC_SUBST( [PYTHON_EXEC_PREFIX], [$ax_python_exec_prefix]) dnl Check for Python library directory ax_python_pythondir_suffix=`${PYTHON} -c "import sys; import distutils.sysconfig; sys.stdout.write(distutils.sysconfig.get_python_lib(0, 0, prefix=''))" 2>/dev/null`; AS_IF( [test "x${ac_cv_with_pythondir}" = x || test "x${ac_cv_with_pythondir}" = xno], [AS_IF( [test "x${ac_cv_with_pyprefix}" = x || test "x${ac_cv_with_pyprefix}" = xno], [ax_python_pythondir="${ax_python_prefix}/${ax_python_pythondir_suffix}"], [ax_python_pythondir=`${PYTHON} -c "import sys; import distutils.sysconfig; sys.stdout.write(distutils.sysconfig.get_python_lib()) " 2>/dev/null`])], [ax_python_pythondir=$ac_cv_with_pythondir]) AC_SUBST( [pythondir], [$ax_python_pythondir]) dnl Check for Python platform specific library directory ax_python_pyexecdir_suffix=`${PYTHON} -c "import sys; import distutils.sysconfig; sys.stdout.write(distutils.sysconfig.get_python_lib(1, 0, prefix=''))" 2>/dev/null`; ax_python_library_dir=`${PYTHON} -c "import sys; import distutils.sysconfig; sys.stdout.write(distutils.sysconfig.get_python_lib(True)) " 2>/dev/null`; AS_IF( [test "x${ac_cv_with_pyprefix}" = x || test "x${ac_cv_with_pyprefix}" = xno], [ax_python_pyexecdir="${ax_python_exec_prefix}/${ax_python_pyexecdir_suffix}"], [ax_python_pyexecdir=$ax_python_library_dir]) AC_SUBST( [pyexecdir], [$ax_python_pyexecdir]) AC_SUBST( [PYTHON_LIBRARY_DIR], [$ax_python_pyexecdir_suffix]) AC_SUBST( [PYTHON_PACKAGE_DIR], [$ax_python_library_dir]) ]) ]) dnl Function to determine the prefix of pythondir AC_DEFUN([AX_PYTHON_CHECK_PYPREFIX], [AX_COMMON_ARG_WITH( [pyprefix], [pyprefix], [use `python-config --prefix' to determine the prefix of pythondir instead of --prefix], [no], [no]) ]) dnl Function to detect if to enable Python AC_DEFUN([AX_PYTHON_CHECK_ENABLE], [AX_PYTHON_CHECK_PYPREFIX AX_COMMON_ARG_ENABLE( [python], [python], [build Python bindings], [no]) AX_COMMON_ARG_WITH( [pythondir], [pythondir], [use to specify the Python directory (pythondir)], [no], [no]) AS_IF( [test "x${ac_cv_enable_python}" != xno], [AX_PYTHON_CHECK]) AM_CONDITIONAL( HAVE_PYTHON, [test "x${ac_cv_enable_python}" != xno]) AM_CONDITIONAL( HAVE_PYTHON_TESTS, [test "x${ac_cv_enable_python}" != xno]) ]) ])